CN1589052A - Abnormal detecting method for moving node in flexible IP network technology system - Google Patents
Abnormal detecting method for moving node in flexible IP network technology system Download PDFInfo
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- CN1589052A CN1589052A CNA2004100731554A CN200410073155A CN1589052A CN 1589052 A CN1589052 A CN 1589052A CN A2004100731554 A CNA2004100731554 A CN A2004100731554A CN 200410073155 A CN200410073155 A CN 200410073155A CN 1589052 A CN1589052 A CN 1589052A
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Abstract
A mobile node abnormal detection in a flexible IP network technological system is carried out by timely decting the synchronous state with a basic domain management entity, an access management entity and mobile nodes. A timer and a counter are used to test the suppertime process of rigistration and information maintenance, the basic domain management entity, the access management entity and the mobile node, maintain a uniform state mark for keeping synchronization, the mobile node tests the system by compairing the local state and state of reply acho. The timer and counter monitor the suppertime detection to periodic register information and NAT port information maintenance.
Description
Technical field
The present invention relates to the method for detecting abnormality of mobile node in a kind of flexible IP network technology system, be specifically related to a kind of each management entity or network environment of flexible IP network technology system operation when flexible IP network technology system and occur when unusual, mobile node carries out the method that the oneself detects.
Background technology
The network environment that the mobile subscriber moves to varies, and access way is also varied, as dialing, ADSL dialing or local area network (LAN) access etc.In mobile IP technology, mobile node breaks down in roam procedure or can't avoid fully unusually appears in network environment, and existing mobile IP system does not have corresponding abnormality detection and treatment mechanism.In a single day mobile IP system breaks down or unusually, move after the mobile node of outer net is found and to re-register trial repeatedly, cause a large number of users concurrent registration simultaneously in the short time, cause great burden to system, can cause the whole system paralysis when serious, all services that provide to mobile IP system are provided, have also had a strong impact on the application and the popularization of mobile IP system thus.Mobile IP system break down or unusual after, the mobile subscriber need be restarted mobile node software just can rebulid normal communication.In many cases, if the state of whole system is inconsistent after restarting, can cause whole mobile IP system to work on.
Summary of the invention
The object of the present invention is to provide the method for detecting abnormality of mobile node in a kind of flexible IP network technology system, it has solved in the background technology that mobile node breaks down in roam procedure or network environment occurs when unusual, there is not corresponding abnormality detection mechanism, and the increase system burden, even cause the technical problem of systemic breakdown.
Technical solution of the present invention is:
The method for detecting abnormality of mobile node in a kind of flexible IP network technology system, its special character is: this detection method may further comprise the steps
1). the real-time detection of mobile node 6: whether the USB port of mobile node 6 real-time detection computations machine/notebook computer appointments is connected with the hardware unit of placing subscriber identity information, if this hardware unit is pulled out, then is judged to be unusual;
2). the detection of registration timeout: statistics is lost, 6 cycles of mobile node are carried out the number of the response packet of authentication registration to ground field management entity 1, carry out abnormality detection;
3) abnormality detection of .NAT port maintenance information: the number of the maintenance information that the corresponding data port of losing by statistics, mobile node 6 is created for the mobile subscriber to access-in management entity 3 sends, carry out abnormality detection;
4) .NAT is restarted the detection of variation: monitor the variation that nat port is restarted by access-in management entity 3, carry out automatic abnormality detection;
5). the detection that access-in management entity 3 is restarted:, carry out abnormality detection by detecting the variation of access-in management entity 3 rebooting status;
6). the detection that ground field management entity 1 is restarted:, carry out abnormality detection by detecting the variation of ground field management entity 1 rebooting status;
7). when described ground field management entity 1, access-in management entity 3 or nat port occur carrying out the state respective change that authentication registration is replied when unusual, mobile node 6 is replied the unusual of the condition detecting system that returns by contrasting local state and authentication registration;
8). the synchronization status marker of safeguarding unity jointly between described ground field management entity 1, access-in management entity 3 and the mobile node 6: when mobile node 6 sends first register requirement and ground field management entity 1 when not returning registration reply, three's state all is 0; When 1 authentication of ground field management entity is passed through, and after mobile node 6 successfully received registration reply, three's state became 1; After the correct foundation in tunnel, three's state finally becomes 2.
Above-mentioned statistics is lost, 6 cycles of mobile node are meant to the number that ground field management entity 1 carries out the response packet of authentication registration: the variable of the counter that mobile node 6 periodic certification marks are lost, when the value of this counter variable surpasses threshold value, then be judged to be unusual.
Above-mentioned ground field management entity 1, access-in management entity 3 or the nat port of working as occurs unusual, carry out the state respective change that authentication registration is replied, when mobile node 6 is replied the condition detecting system that returns unusual by contrasting local state and authentication registration, specifically can realize by following manner:
The mode that combines by the timer sum counter detects periodic log-on message and the overtime of nat port maintenance information.
The synchronization status marker of safeguarding unity jointly between above-mentioned ground field management entity 1, access-in management entity 3 and the mobile node 6 is meant: when mobile node 6 sends first register requirement and ground field management entity 1 when not returning registration reply, ground field management entity 1, access-in management entity 3 and mobile node 6 threes' state all is 0; When 1 authentication of ground field management entity is passed through, and after mobile node 6 successfully received registration reply, ground field management entity 1, access-in management entity 3 and mobile node 6 threes' state became 1; After the correct foundation in tunnel, ground field management entity 1, access-in management entity 3 and mobile node 6 three's states finally become 2.
That above-mentioned ground field management entity 1 is meant is that a port links to each other with mobile node 6 basic network territory links, the network equipment of authentication and proxy ARP is provided for the mobile node 6 that roaming takes place; Described mobile node 6 be meant can with 4 the position of entering the Internet from a link switchover to another link and still keep the equipment of all ongoing communications with the identity in basic network territory.
Above-mentioned registration is meant that mobile node 6 carries the process that Care-of Address carries out authentication to ground field management entity 1.
Above-mentioned NAT is meant: when main frame on the private network host access public network or server, can be the IP map addresses of private network main frame the IP address of public network main frame, make this private network main frame can on internet 4, carry out proper communication, can be transmitted to response packet the network address conversion device of main frame in the private network simultaneously.
Said system is meant flexible IP network technology system, and described flexible IP network technology system is meant the network system that is made of management entity, realization mobile node 6 still keeps the identity in basic network territory to carry out proper network communication when roaming into the extended network territory.
The present invention has the following advantages:
1. the detection method system that proposes of the present invention, comprehensive, reliable, practical;
2. the present invention utilizes in the flexible IP network technology system field in the register requirement and response message to carry corresponding state synchronization, reasonable use the original working mechanism of flexible IP network technology system, improved the efficient of system;
3. the good abnormality detection mechanism of the present invention has strengthened the self-correction ability of system.When certain management entity of flexible IP network technology system or network environment occur when unusual, mobile node can detect automatically, is convenient to system restoration and handles;
4. make things convenient for the user, and guaranteed the optimum running status of whole system;
5. the present invention is the key technology of flexible IP network technology system stable operation and large-scale application, to the popularization on a large scale of flexible IP network technology system, use maximum facility is provided.
Description of drawings
Accompanying drawing is each functional entity and network topology structure schematic diagram in the flexible IP network technology system of the present invention.
Drawing reference numeral explanation: 1-ground field management entity; 2-NAT, the NAT in basic network territory; 3-access-in management entity; 4-Internet, i.e. internet; 5-NAT, the NAT in extended network territory; The 6-mobile node.
Embodiment
The present invention is restarted detection, ground field management entity 1 from real-time detection, registration timeout detection, the overtime detection of nat port maintenance information, nat port change-detection, the access-in management entity 3 of mobile node 6 and is restarted and detect six aspect monitoring unusually flexible IP network technology system.
In real time synchronous regime is checked by ground field management entity 1, access-in management entity 3 and mobile node 6, detected the unusual of each functional entity of flexible IP network technology system; To the timeout treatment of registration and maintenance information, the mode that adopts the timer sum counter to combine detects.The abnormality detection mechanism of mobile node 6 builds on the basis of whole flexible IP network technology system exception handling.Status Flag for keeping safeguarding unity synchronously between ground field management entity 1, access-in management entity 3 and the mobile node 6, when ground field management entity 1, access-in management entity 3 or nat port occur when unusual, the state of registration reply can corresponding changing, and mobile node 6 is by contrasting local state and replying the state that returns and detection system unusual.For the overtime detection of periodic log-on message and nat port maintenance information, then can monitor by the mode that the timer sum counter combines.
The flexible IP network technology system that the present invention adopts is made of ground field management entity 1, extending domain management entity, access-in management entity 3 and mobile node 6, this flexible IP network technology system can make the arbitrarily roaming in the Global Internet scope of mobile node 6 in the local area network (LAN), and can guarantee that mobile node 6 can realize interactive access with its ground field at any time.
Referring to accompanying drawing, concrete detection method of the present invention is as follows:
1. the real-time detection of mobile node 6
User's identity information generally is placed in a certain hardware unit, this hardware unit is a part of flexible IP network technology system, the identity information of this hardware unit record mobile node 6 is used for the identity to ground field management entity 1 confirmation mobile node 6.System needs real-time being inserted on computer/notebook computer of this hardware unit when moving.If system's operation sometime, this hardware unit is pulled out, and system should detect and point out the user automatically.
The USB mouth of mobile node 6 real-time detection computations machine/notebook computer appointments, whether the USB mouth that promptly detects appointment in real time is connected with hardware unit.Automatically detect and record when specifying the USB mouth to be client terminal start-up.
2. the detection of registration timeout
For guaranteeing the fail safe of flexible IP network technology system, mobile node 6 needs the cycle to send the authentication registration request to ground field management entity 1, and ground field management entity 1 can be replied by the response authentication registration.If network environment deterioration or ground field management entity 1 or access-in management entity 3 break down, can cause authentication registration to be replied can not normally regain.The detection of registration timeout is to realize by the number that the authentication registration that statistics is lost is replied.
Authentication registration request of mobile node 6 every transmissions, the counter variable that mark is lost adds 1; Whenever receive that an authentication registration replys, the counter variable that mark is lost subtracts 1.In order to prevent that build-up effect from appearring in this variable, after the authentication registration of receiving some is continuously replied with this variable clear 0.Client periodically detects this counter variable, if the value of a certain this counter variable of the moment surpasses certain threshold value, then thinks to occur unusually.
3.NAT the abnormality detection of port maintenance information
NAT generally has network address port transformation function, i.e. NAPT function.That is to say that when the host A of private network was visited the host B of public network, NAT can dynamically be mapped as a certain port P that NAT safeguards to the source port of host A, and hides the concrete network details of private network, with the protection private network.
After the normal foundation in flexible IP network technology system tunnel, access-in management entity 3 can be created a data port for each mobile node 6, be used for transmitting data.If in the certain time interval T, in 50s, do not mail to the data of this FPDP from mobile node 6, NAT can be the corresponding port positive closing of shining upon corresponding to this FPDP above it.For preventing the generation of this situation, mobile node 6 needs the corresponding data port transmit port maintenance information of active on access-in management entity 3 in less than the time of T.
The detection of nat port maintenance information and the detection type of registration timeout are same, and it carries out abnormality detection by the port maintenance information that statistics is lost.
Following three kinds of abnormality detection mechanism of the mobile node 6 all abnormality detection mechanism with whole flexible IP network technology system are relevant.For guaranteeing whole system stable operation, the Status Flag of safeguarding unity jointly between ground field management entity 1, access-in management entity 3 and the mobile node 6: when mobile node 6 sends first register requirement and ground field management entity 1 when not returning registration reply, three's state all is 0; When 1 authentication of ground field management entity is passed through, and after mobile node 6 successfully received registration reply, three's state became 1; After the correct foundation in tunnel, three's state finally becomes 2.
4.NAT the detection of restarting
When NAT was restarted, access-in management entity 3 detected automatically by monitoring that nat port changes.Change if find nat port, then access-in management entity 3 states become 0, and with this status change notification mobile node 6 and ground field management entity 1.After mobile node 6 and ground field management entity 1 were received status change notification, the state of the two also became 0 synchronously; Discharge related resource, new registration process is restarted in the deletion tunnel.
5. access-in management entity 3 detection of restarting
After access-in management entity 3 was restarted, state became 0; Access-in management entity 3 is with this status change notification ground field management entity 1, and ground field management entity 1 state also becomes 0.At this moment, receive the register requirement of mobile node 6 after, ground field management entity 1 and access-in management entity 3 states become 1, and to give their states of mobile node 6 Returning marks be 1 registration reply.After mobile node 6 was received this registration reply, the state of finding oneself was 2, and access-in management entity 3 states are 1, and then mobile node 6 also is the state of oneself 1 synchronously, and to carry out state be required operation in 1 o'clock.
6. ground field management entity 1 detection of restarting
After ground field management entity 1 was restarted, state became 0.Access-in management entity 3 by and ground field management entity 1 between maintenance information find the variation of ground field management entity 1.Access-in management entity 3 also is initialized as 0 to state.
Relevant technical terms explanation of the present invention:
The ground field management entity: the network equipment that has a port to link to each other with the basic network territory at mobile node place, for the mobile node that roaming takes place provides purview certification and identity agency.
The extending domain management entity: the network equipment on the extended network territory of mobile node, for mobile node is transmitted authentication message and packet.
The access-in management entity: having can be at the network equipment of the IP address of internet route, and it authenticates and transmit the trunking of mobile node packet to the mobile node identity between ground field management entity and extending domain management entity.
The basic network territory: mobile node is roamed the network at preceding place.
Extended network territory: the network that mobile node roaming back is arrived.
Mobile node: can with the position of entering the Internet from a link switchover to another link, and still keep all ongoing communications, and only use the equipment of original fixed ip address.
Correspondent Node: mobile node moves to after the extended network territory, the main frame or the server of communicating by letter with its foundation.
NAT: network address translation, when main frame on the private network host access public network or server, NAT can be the IP map addresses of private network main frame the IP address of a certain public network main frame, so that this private network main frame can carry out proper communication on the internet; Simultaneously NAT is responsible for response packet is transmitted to main frame in the private network.
Internet: internet.
Claims (8)
1. the method for detecting abnormality of mobile node in the flexible IP network technology system, it is characterized in that: this detection method comprises
1). the real-time detection of mobile node (6): whether mobile node (6) USB port of detection computations machine/notebook computer appointment in real time is connected with the hardware unit of placing subscriber identity information, if this hardware unit is pulled out, then is judged to be unusual;
2). the detection of registration timeout: statistics is lost, mobile node (6) cycle is carried out the number of the response packet of authentication registration to ground field management entity (1), carries out abnormality detection;
3) abnormality detection of .NAT port maintenance information: the number of the maintenance information that the corresponding data port of losing by statistics, mobile node (6) is created for the mobile subscriber to access-in management entity (3) sends, carry out abnormality detection;
4) .NAT is restarted the detection of variation: monitor the variation that nat port is restarted by access-in management entity (3), carry out automatic abnormality detection;
5). the detection that access-in management entity (3) is restarted:, carry out abnormality detection by detecting the variation of access-in management entity (3) rebooting status;
6). the detection that ground field management entity (1) is restarted:, carry out abnormality detection by detecting the variation of ground field management entity (1) rebooting status;
7). when described ground field management entity (1), access-in management entity (3) or nat port occur when unusual, carry out the state respective change that authentication registration is replied, mobile node (6) is replied the unusual of the condition detecting system that returns by contrasting local state and authentication registration;
8). the synchronization status marker of safeguarding unity jointly between described ground field management entity (1), access-in management entity (3) and the mobile node (6): when mobile node (6) sends first register requirement and ground field management entity (1) when not returning registration reply, three's state all is 0; When ground field management entity (1) authentication is passed through, and after mobile node (6) successfully received registration reply, three's state became 1; After the correct foundation in tunnel, three's state finally becomes 2.
2. the method for detecting abnormality of mobile node in the flexible IP network technology system according to claim 1, it is characterized in that: described statistics is lost, mobile node (6) cycle is meant to the number that ground field management entity (1) carries out the response packet of authentication registration: the variable of the counter that the periodic certification mark of mobile node (6) is lost, when the value of this counter variable surpasses threshold value, then be judged to be unusual.
3. the method for detecting abnormality of mobile node in the flexible IP network technology system according to claim 1 and 2, it is characterized in that: described ground field management entity (1), access-in management entity (3) or the nat port of working as occurs unusual, carry out the state respective change that authentication registration is replied, when mobile node (6) is replied the condition detecting system that returns unusual by contrasting local state and authentication registration, specifically realize by following manner
The mode that combines by the timer sum counter detects periodic log-on message and the overtime of nat port maintenance information.
4. the method for detecting abnormality of mobile node in the flexible IP network technology system according to claim 3, it is characterized in that: the synchronization status marker of safeguarding unity jointly between described ground field management entity (1), access-in management entity (3) and the mobile node (6) is meant: when mobile node (6) sends first register requirement and ground field management entity (1) when not returning registration reply, ground field management entity (1), access-in management entity (3) and mobile node (6) three's state all is 0; When ground field management entity (1) authentication is passed through, and after mobile node (6) successfully received registration reply, ground field management entity (1), access-in management entity (3) and mobile node (6) three's state became 1; After the correct foundation in tunnel, ground field management entity (1), access-in management entity (3) and mobile node (6) three's state finally become 2.
5. the method for detecting abnormality of mobile node in the flexible IP network technology system according to claim 4 is characterized in that: described ground field management entity (1) is meant the network equipment that a port links to each other with mobile node (6) basic network territory link, that authentication and proxy ARP are provided for the mobile node (6) that roaming takes place; Described mobile node (6) be meant can with the position of enter the Internet (4) from a link switchover to another link and still keep the equipment of all ongoing communications with the identity in basic network territory.
6. the method for detecting abnormality of mobile node in the flexible IP network technology system according to claim 5 is characterized in that: described registration is meant that mobile node (6) carries the process that Care-of Address carries out authentication to ground field management entity (1).
7. the method for detecting abnormality of mobile node in the flexible IP network technology system according to claim 6, it is characterized in that: described NAT is meant
When main frame on the private network host access public network or server, can be the IP map addresses of private network main frame the IP address of public network main frame, make this private network main frame on internet (4), carry out proper communication, can be transmitted to response packet the network address conversion device of main frame in the private network simultaneously.
8. the method for detecting abnormality of mobile node in the flexible IP network technology system according to claim 7, it is characterized in that: described system is meant flexible IP network technology system, and described flexible IP network technology system is meant the network system that is made of management entity, realization mobile node (6) still keeps the identity in basic network territory to carry out proper network communication when roaming into the extended network territory.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100731554A CN1268162C (en) | 2004-09-30 | 2004-09-30 | Abnormal detecting method for moving node in flexible IP network technology system |
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| CNB2004100731554A CN1268162C (en) | 2004-09-30 | 2004-09-30 | Abnormal detecting method for moving node in flexible IP network technology system |
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| CN1589052A true CN1589052A (en) | 2005-03-02 |
| CN1268162C CN1268162C (en) | 2006-08-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101223812B (en) * | 2005-07-27 | 2012-04-18 | 株式会社Ntt都科摩 | Mobile station, wireless access network apparatus, mobile communication system and communication method |
| CN101365206B (en) * | 2007-08-10 | 2012-09-05 | 中兴通讯股份有限公司 | Detection system and method for exception example resource |
| CN114143225A (en) * | 2021-11-03 | 2022-03-04 | 中盈优创资讯科技有限公司 | Method and device for dynamically monitoring abnormal active address based on network detection technology |
-
2004
- 2004-09-30 CN CNB2004100731554A patent/CN1268162C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101223812B (en) * | 2005-07-27 | 2012-04-18 | 株式会社Ntt都科摩 | Mobile station, wireless access network apparatus, mobile communication system and communication method |
| CN101365206B (en) * | 2007-08-10 | 2012-09-05 | 中兴通讯股份有限公司 | Detection system and method for exception example resource |
| CN114143225A (en) * | 2021-11-03 | 2022-03-04 | 中盈优创资讯科技有限公司 | Method and device for dynamically monitoring abnormal active address based on network detection technology |
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| Publication number | Publication date |
|---|---|
| CN1268162C (en) | 2006-08-02 |
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Granted publication date: 20060802 Termination date: 20180930 |